<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        var name = "zhang";
        var obj = {
            name:"li"
        };
        var func = function(){
            console.log(this.name);
        }.bind(obj);
        //如果不加bind输出直接是zhang
        func();
    </script>
</body>
</html>